static void check_event (ptid_t ptid) { struct regcache *regcache = get_thread_regcache (ptid); struct gdbarch *gdbarch = get_regcache_arch (regcache); td_event_msg_t msg; td_thrinfo_t ti; td_err_e err; CORE_ADDR stop_pc; int loop = 0; /* Bail out early if we're not at a thread event breakpoint. */ stop_pc = regcache_read_pc (regcache) - gdbarch_decr_pc_after_break (gdbarch); if (stop_pc != td_create_bp_addr && stop_pc != td_death_bp_addr) return; loop = 1; do { err = td_ta_event_getmsg_p (thread_agent, &msg); if (err != TD_OK) { if (err == TD_NOMSG) return; error ("Cannot get thread event message: %s", thread_db_err_str (err)); } err = td_thr_get_info_p ((void *)(uintptr_t)msg.th_p, &ti); if (err != TD_OK) error ("Cannot get thread info: %s", thread_db_err_str (err)); ptid = BUILD_THREAD (ti.ti_tid, GET_PID (ptid)); switch (msg.event) { case TD_CREATE: /* We may already know about this thread, for instance when the user has issued the `info threads' command before the SIGTRAP for hitting the thread creation breakpoint was reported. */ attach_thread (ptid, (void *)(uintptr_t)msg.th_p, &ti, 1); break; case TD_DEATH: if (!in_thread_list (ptid)) error ("Spurious thread death event."); detach_thread (ptid, 1); break; default: error ("Spurious thread event."); } } while (loop); }
static int sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) { td_err_e retval; td_thrinfo_t ti; ptid_t ptid; if ((retval = p_td_thr_get_info (th, &ti)) != TD_OK) { return -1; } ptid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_ptid)); if (!in_thread_list (ptid)) add_thread (ptid); return 0; }
static int find_new_threads_callback (const td_thrhandle_t *th_p, void *data) { td_thrinfo_t ti; td_err_e err; ptid_t ptid; err = td_thr_get_info_p (th_p, &ti); if (err != TD_OK) error ("Cannot get thread info: %s", thread_db_err_str (err)); /* Ignore zombie */ if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE) return 0; ptid = BUILD_THREAD (ti.ti_tid, proc_handle.pid); attach_thread (ptid, th_p, &ti, 1); return 0; }
/* Convert LWP to user-level thread id. */ static ptid_t thread_from_lwp (ptid_t ptid, td_thrhandle_t *th, td_thrinfo_t *ti) { td_err_e err; gdb_assert (IS_LWP (ptid)); if (fbsd_thread_active) { err = td_ta_map_lwp2thr_p (thread_agent, GET_LWP (ptid), th); if (err == TD_OK) { err = td_thr_get_info_p (th, ti); if (err != TD_OK) error ("Cannot get thread info: %s", thread_db_err_str (err)); return BUILD_THREAD (ti->ti_tid, GET_PID (ptid)); } } /* the LWP is not mapped to user thread */ return BUILD_LWP (GET_LWP (ptid), GET_PID (ptid)); }
static ptid_t lwp_to_thread (ptid_t lwp) { td_thrinfo_t ti; td_thrhandle_t th; td_err_e val; if (is_thread (lwp)) return lwp; /* It's already a thread id */ /* It's an lwp. Convert it to a thread id. */ if (!sol_thread_alive (lwp)) return pid_to_ptid (-1); /* defunct lwp */ val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); if (val == TD_NOTHR) return pid_to_ptid (-1); /* thread must have terminated */ else if (val != TD_OK) error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val)); val = p_td_thr_validate (&th); if (val == TD_NOTHR) return lwp; /* libthread doesn't know about it; just return lwp */ else if (val != TD_OK) error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val)); val = p_td_thr_get_info (&th, &ti); if (val == TD_NOTHR) return pid_to_ptid (-1); /* thread must have terminated */ else if (val != TD_OK) error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); }